Staff: Mentor

If an electron in an excited wave form passes thru an electric field , can it lose kinetic energy in doing so.?

I'm not sure what you mean by "an electron in an excited wave form", but it's clearly the case that an electron can lose (or gain) kinetic energy as it passes through an electric field. Consider the trajectory of an electron approaching fired towards a negatively charged capacitor plate, for example.

The kinetic energy of an electron can be converted to potential energy stored in a magnetic or electric field. This is a reversible conversion. Alternatively it can be converted to electromagnetic radiation or dissipated as heat.

What I am getting at is the 2 slit exp. an slectron passes thru the slits and produces an interference pattern. When the dedector is turned on an electric field is produced that the electron passes thru and in the process may lose some of its kinetic energy. Could the loss of this kinetic energy be the cause of the loss of the interference pattern?